Method and apparatus for delivering messages to devices located

Details Method and apparatus for delivering messages to devices located Method and apparatus for delivering messages to devices located

1997-10-03

2000-05-30

Trost, William G.

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

455 132, H04Q 720

Patent

active

060700505

ABSTRACT:
A global message delivery system (100) transmits messages to messaging devices (130) using a plurality of satellites (110). In order to facilitate message delivery, the surface of the earth is divided into a number of logical delivery areas (202) (LDAs). Each satellite provides at least one beam (210) which spans one or more LDAs (202). When a request is received (704) to deliver a message to a messaging device (130), an Opportunity Table (600) is used to quickly determine which beam (210) to use to deliver the message. The Opportunity Table (600) correlates the messaging device's location and upcoming activation times with which beams (210) are covering which LDAs (202).

REFERENCES:
patent: 5129095 (1992-07-01), Davis et al.
patent: 5659298 (1997-08-01), Brooks et al.
patent: 5717686 (1998-02-01), Schiavoni
patent: 5721534 (1998-02-01), Olds et al.
patent: 5860058 (1999-01-01), Daniel et al.
patent: 5883580 (1999-03-01), Briancon et al.

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